Exercise bench



FIG. 1 is a rear perspective view of an exercise bench showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a side elevational view in a different position; and,

FIG. 6 is a side elevational view in a folded position.

The areas of the exercise bench which are not disclosed in the drawings, form no part of the claimed design. 

The ornamental design for an exercise bench, as shown. 